2 NaN3 ---> 2 Na + 3 N2 1) Given 8.38 moles of N2, how many moles of NaN3 are needed?
a. 3.45 moles NaN3
b. 5.59 moles NaN3
c. 8.06 moles NaN3
d. 11.98 moles NaN3

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.